// Elements can have an "elevation" from 1 to 5, signified by shadows.
// See http://google.com/design/spec/what-is-material/objects-in-3d-space.html
.md-shadow-bottom-z-1 {
  box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.26);
}

.md-shadow-bottom-z-2 {
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.4);
}